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Star and crescent
The flag of Pakistan features a white crescent and star
The Islamic Crescent is a symbol consisting of a crescent with a star at the concave side. In its modern form, the star is usually shown with five points (though in earlier centuries a higher number of points was often used). The two signs together, or the crescent only, was long a symbol of Byzantium and also appeared on coins of the Sassanid Empire. Now it is often a symbol of Islam. It is seen on a number of different country flags such as Turkey and Pakistan[n 1] respectively.
Flag of Ottoman Empire was the first flag featuring a crescent with a star. Other states formerly part of the Ottoman Empire also used the symbol, so the symbol emerged into popular use.